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**mikebg** · 08-09-2011, 02:53 AM

Originally posted by der_fisherman View Post

I was looking around and found a .pdf of several Maplin MD designs and their capabilities, see attachments for a copy.

What interested me was the given performance of the "top of the range version", or L24BK as it is known.

Fisherman, these metal detectors are not Maplin designs. Maplin Electronics is just a trading company that unlike Kellyco, supplies goods of unknown origin and design. L24BK is only an order code. Delivery is free in the UK. For delivery in Germany the price will be higher.
http://www.maplin.co.uk/search?criteria=metal+detectors

**bernte_one** · 08-09-2011, 06:34 AM

hello fisherman

it is the GC 1010 same producer as from the GC 1023 (black bull, black knight magpie)

it is from china my father has the GC1010 the search distance is around 25cm for 1 euro coin with all metal mode and no disc with disc it are 23cm
you cant drive in full sens it gives a lot of false signal in wet ground it hates forest ground
the disc make no difference between alu and gold no i dont found gold but it shows gold when i found alu

**der_fisherman** · 08-09-2011, 06:56 AM

Maplin detectors

Dear Mike,

I wanted to know how well they work, not how to order one!!

Please read what I wrote carefully, did I ask how to order one? NO I did not.....

I am more than capable of buying one and getting it sent here if I so require by my own fully BRITISH (and still living there) family.

I was after performance details. The size of the 10p is actually a lot smaller than I mentioned....

Please read more carefully any further posts before answering, otherwise its simply pointless answering.

Andy

PS. Here is a short exact excert from my original post to remind you of what I actually was asking:-

What interested me was the given performance of the "top of the range version", or L24BK as it is known.

Firstly its very, very cheap compared to its spec, a 10p coin being quite small at 25cm!!! I don't have a 10p to hand, but probably its well less than 2cm across, quite thin and made of a silvery (Nickel?) metal.

Has anyone here used a L24BK? Bought one? Heard anything either positive or negative? It looks quite reasonable from the comparison chart performance wise.....LCD display, 8 metal modes etc etc etc....

**bernte_one** · 08-09-2011, 07:01 AM

the sound makes the music

**der_fisherman** · 08-09-2011, 10:37 AM

Misreading of posts.....

...which is why I answered the way I did, the post was telling me nothing that I asked about, in fact, not a single point about what I asked for.

Also I know how to get one as I had been online at Maplin before I posted.....it showed how some people simply do not take in or understand an email......most UN-thoughtfull!

All I wanted to know was performance details and impressions..

......by the way, did you read my post yourself? did you see where I asked anything about ordering and delivering (by the way, not outside of the UK basically and I live in Germany!), please let me know if I messed up on that point.....be so kind.

If I had made the same or a similar mistake, which has happened to everyone at some point in their life (are you perfect? then maybe not you!), then I always apologise for my gaff.....is it so much to ask for?

I have done this myself on this website on the IGSL pages, only about 10 days or so ago, that is fairly recently. Also done it in real life as I personally believe its important, so its not something that I preach and don't follow myself, I do follow it as its simply good manners to apologise when you are in the wrong.

Don't you agree?

Also I don't personally butt in with regard to other people's gaffs, unless they are very recalcitrant with their apologies.....and certainly not on the side of the one who is demonstrating "good music"!!

Stay healthy, but please don't butt in when you seemingly don't understand fully yourself either......I never realised that my post was so badly written and difficult to understand, I'll have to start going to English lessons again!!

My personal take is that Geotech is SO important to us all and therefore simply not worth in making it anything other than a place of top information, friendliness and good manners.....we all make mistakes occasionally, some of us have trouble recognising the fact......

Rant over!!

Regards

Andy

**Skippy** · 08-09-2011, 11:02 AM

I have read good things (on another forum) about the junior model in the Maplin range, the L45BH, as in - it's quite adequate for the price of 30 pounds, and does actually detect things. It would be reckless to assume the more expensive machine was also OK, though.
The potential problem with these badge-engineered Chinese detectors is lack of consistency - one might be OK, the next poor.
The British 10p coin is 25mm diameter, medium thickness, and made of cupro-nickel.The quoted depth figures would, I imagine, be air-tests, how well the machine works in ground is a different matter.
A better use of you money would be to buy a secondhand branded machine, commonly suggested models include Garrett's ACE150/250, Fisher's F2, and many more.

**maikl** · 08-09-2011, 02:41 PM

Originally posted by bernte_one View Post

hello fisherman

it is the GC 1010 same producer as from the GC 1023 (black bull, black knight magpie)

it is from china my father has the GC1010 the search distance is around 25cm for 1 euro coin with all metal mode and no disc with disc it are 23cm
you cant drive in full sens it gives a lot of false signal in wet ground it hates forest ground
the disc make no difference between alu and gold no i dont found gold but it shows gold when i found alu

Hi bernte_one. 25cm for 1 euro in the air and not in the soil is not it? The soil will be barely 15cm...

**Carl-NC** · 08-09-2011, 03:55 PM

Andy,

Generally you get what you pay for with these Chinese detectors. I haven't tested this particular model, but the Chinese detectors I have tested had sub-par performance and very poor build quality. A consistent problem I've seen is a horrible lag in the audio response, which will drive you crazy trying to pinpoint. Also, forget about accessory loops.

- Carl

**mikebg** · 08-09-2011, 04:55 PM

I think the model shown in post #1 is GC-1019
http://www.globalsources.com/gsol/I/...1001865318.htm

**WM6** · 08-09-2011, 08:59 PM

Originally posted by Carl-NC View Post

Andy,

Generally you get what you pay for with these Chinese detectors. I haven't tested this particular model, but the Chinese detectors I have tested had sub-par performance and very poor build quality. A consistent problem I've seen is a horrible lag in the audio response, which will drive you crazy trying to pinpoint. Also, forget about accessory loops.

- Carl

Hi Carl

Is this based on Whites model? Which?

Look at trademark logo on coil:

http://www.cnbftech.com/Productsshow.asp?id=518

or in difficulties with site search for "HENAN TC91 Metal Detector"

And here Operators Manual:

www.guitan.com.cn/english/TC-91.doc

Interesting technical data:
Maximum depth of detection: 1.5 M
Operate mode:ground Balance /Discriminate
Oscillate frequency: 460.18KHZ+/-2KHZ
Power consumption: 450HZ+/-10HZ
Power consumption: 0.6W
Power supply: 9V DC

Attached Files

Guitan.jpeg (6.0 KB, 655 views)

**bernte_one** · 08-10-2011, 05:28 AM

Originally posted by maikl View Post

Hi bernte_one. 25cm for 1 euro in the air and not in the soil is not it? The soil will be barely 15cm...

yes in air- if not others is written

air is mostly the same all over the world but the soil is not
so for comparison i basicly mean in air

@fisherman

you are right in all points you said before

but for myself i can say that i dont waste time for reading stuff that doesn´t interest me i just fly over it

that´s why i answered your question so good as i can i dont comment unuseable post of others but every posting that is done after your question brings you one step clother to the final answer see it so

**wam** · 08-10-2011, 07:17 AM

I have something similar, (The LCD is the same but the case is more like ACE150).
It runs on 2 x 9V. I have moded it for set AA batteries, and made more gain in ops.
It worked well between copper rock hills selecting iron pieces under the rocks.
The oscilator frequency is to run micro. The coil runs on 6.5 kHz.
I may have schematic for it if some one make pics of PCB to check components.
The coil oscilator is a hart of detector and is not synch. with micro clock so the frequency can by change a litle for better coils. My unit needed to reset power periodicly to be stable. Buy one used for nothing and play with electronic and coils - good fun.
I have check range for two units like that and it was just more than 20cm for 25c US. in air.

**der_fisherman** · 08-10-2011, 12:02 PM

Gentlemen, many thanks for the comments and help, I don't think that I will put any money into one......
I will continue with my build of an IGSL eventually once Silverdog has the PCBs available..
regards
Andy

**maikl** · 08-10-2011, 05:41 PM

Originally posted by bernte_one View Post

yes in air- if not others is written

air is mostly the same all over the world but the soil is not
so for comparison i basicly mean in air

@fisherman

you are right in all points you said before

but for myself i can say that i dont waste time for reading stuff that doesn´t interest me i just fly over it

that´s why i answered your question so good as i can i dont comment unuseable post of others but every posting that is done after your question brings you one step clother to the final answer see it so

Hi bernte_one. I know that everywhere in the world sellers advertise the detection of airborne and even add some centimeters. Some detectors have a loss of detection in soil by 30% and some 50% or more%, on a same field. I thought that you are doing the test in soil (buried coins ...). But it is not important...Best regards.

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Maplin L24BK VLF, How Good Are they Really?

Maplin L24BK VLF, How Good Are they Really?

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